/*
 * Copyright (c) 2010, 2011
 *	Open Source Technologies Ltd.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the company nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COMPANY AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
#ifndef __BLISS64_LEXER_H__
#define __BLISS64_LEXER_H__

#define LEXER_MAGIC 0x39210000
#define LEXER_DEAD  0x3921DEAD

#ifndef __TOKEN_T__
#define __TOKEN_T__
typedef struct token_st token_t;
#endif /* !__TOKEN_T__ */

#ifndef __LEXER_T__
#define __LEXER_T__
typedef struct lexer_st lexer_t;
#endif /* !__LEXER_T__ */

enum lexer_error
{
	le_success
};

struct lexer_st
{
	uint32_t  l_magic;
	char     *l_path;
	FILE     *l_stream;
	int       l_row;
	int       l_column;
	int       l_error;
};

#define is_lexer(obj)      is_object(obj, l_magic, LEXER_MAGIC)
#define is_lexer_dead(obj) is_object_dead(obj, l_magic, LEXER_MAGIC)
#define is_lexer_opt(obj)  is_object_opt(obj, l_magic, LEXER_MAGIC)

__begin_decls

lexer_t *lexer_create     __p((const char *path));
lexer_t *lexer_initialize __p((lexer_t *lexer, const char *path));

token_t *lexer_read_token __p((lexer_t *lexer));

#ifndef NDEBUG

char *lexer_get_path   __p((lexer_t *lexer));
int   lexer_get_row    __p((lexer_t *lexer));
int   lexer_get_column __p((lexer_t *lexer));
int   lexer_get_error  __p((lexer_t *lexer));

#else /* NDEBUG */

#define lexer_get_path(lexer)   ((lexer)->l_path)
#define lexer_get_row(lexer)    ((lexer)->l_row)
#define lexer_get_column(lexer) ((lexer)->l_column)
#define lexer_get_error(lexer)  ((lexer)->l_error)

#endif /* NDEBUG */

void     lexer_finalize __p((lexer_t *lexer));
lexer_t *lexer_destroy  __p((lexer_t *lexer));

__end_decls

#endif /* !__BLISS64_LEXER_H__ */
